CPF/CPF.ReoGrid/Data/Index4DArray.cs

using System;

namespace CPF.ReoGrid.Data
{
	[Serializable]
	public sealed class Index4DArray<T>
	{
		public Index4DArray()
		{
			this.rows = new T[4096][][][];
		}

		public int MaxRow
		{
			get
			{
				return this.maxRow;
			}
			set
			{
				this.maxRow = value;
			}
		}

		public int MaxCol
		{
			get
			{
				return this.maxCol;
			}
			set
			{
				this.maxCol = value;
			}
		}

		public int RowCapacity
		{
			get
			{
				return 1048576;
			}
		}

		public int ColCapacity
		{
			get
			{
				return 32768;
			}
		}

		public T this[int row, int col]
		{
			get
			{
				int num = row >> 12;
				T[][][] array = this.rows[num];
				bool flag = array == null;
				T result;
				if (flag)
				{
					result = default(T);
				}
				else
				{
					int num2 = col >> 8;
					T[][] array2 = array[num2];
					bool flag2 = array2 == null;
					if (flag2)
					{
						result = default(T);
					}
					else
					{
						int num3 = row & 4095;
						T[] array3 = array2[num3];
						bool flag3 = array3 == null;
						if (flag3)
						{
							result = default(T);
						}
						else
						{
							int num4 = col & 255;
							result = array3[num4];
						}
					}
				}
				return result;
			}
			set
			{
				int num = row >> 12;
				T[][][] array = this.rows[num];
				bool flag = array == null;
				if (flag)
				{
					array = new T[256][][];
					this.rows[num] = array;
				}
				int num2 = col >> 8;
				T[][] array2 = array[num2];
				bool flag2 = array2 == null;
				if (flag2)
				{
					array2 = new T[4096][];
					array[num2] = array2;
				}
				int num3 = row & 4095;
				T[] array3 = array2[num3];
				bool flag3 = array3 == null;
				if (flag3)
				{
					array3 = new T[256];
					array2[num3] = array3;
				}
				int num4 = col & 255;
				array3[num4] = value;
				bool flag4 = value != null;
				if (flag4)
				{
					bool flag5 = this.maxRow < row;
					if (flag5)
					{
						this.maxRow = row;
					}
					bool flag6 = this.maxCol < col;
					if (flag6)
					{
						this.maxCol = col;
					}
				}
			}
		}

		public void Iterate(Func<int, int, T, int> iterator)
		{
			this.Iterate(0, 0, this.maxRow + 1, this.maxCol + 1, true, iterator);
		}

		public void Iterate(int row, int col, int rows, int cols, bool ignoreNull, Func<int, int, T, int> iterator)
		{
			int num = row + rows;
			int num2 = col + cols;
			for (int i = row; i < num; i++)
			{
				int num3 = i >> 12;
				T[][][] array = this.rows[num3];
				bool flag = array == null;
				if (flag)
				{
					bool flag2 = !ignoreNull;
					if (flag2)
					{
						T arg = default(T);
						int num4;
						for (int j = col; j < num2; j += num4)
						{
							num4 = iterator(i, j, arg);
							bool flag3 = num4 < 1;
							if (flag3)
							{
								return;
							}
						}
					}
				}
				else
				{
					int k = col;
					while (k < num2)
					{
						int num5 = k >> 8;
						T[][] array2 = array[num5];
						bool flag4 = array2 == null;
						if (flag4)
						{
							if (ignoreNull)
							{
								k++;
							}
							else
							{
								int num6 = iterator(i, k, default(T));
								bool flag5 = num6 < 1;
								if (flag5)
								{
									return;
								}
								k += num6;
							}
						}
						else
						{
							int num7 = i % 4096;
							T[] array3 = array2[num7];
							bool flag6 = array3 == null;
							if (flag6)
							{
								if (ignoreNull)
								{
									k++;
								}
								else
								{
									int num8 = iterator(i, k, default(T));
									bool flag7 = num8 < 1;
									if (flag7)
									{
										return;
									}
									k += num8;
								}
							}
							else
							{
								int num9 = k % 256;
								T t = array3[num9];
								bool flag8 = t == null && ignoreNull;
								if (flag8)
								{
									k++;
								}
								else
								{
									int num10 = iterator(i, k, t);
									bool flag9 = num10 < 1;
									if (flag9)
									{
										return;
									}
									k += num10;
								}
							}
						}
					}
				}
			}
		}

		internal void Reset()
		{
			this.rows = new T[4096][][][];
			this.maxCol = -1;
			this.maxRow = -1;
		}

		public const int RowSize = 4096;

		public const int RowSizeBits = 12;

		public const int RowSizeModBits = 4095;

		public const int ColSize = 256;

		public const int ColSizeBits = 8;

		public const int ColSizeModBits = 255;

		private T[][][][] rows;

		private int maxRow = -1;

		private int maxCol = -1;
	}
}